Tailoring interfacial architecture of high-voltage cathode with lithium difluoro(bisoxalato) phosphate for high energy density battery | |
Zhao, Dongni3; Wang, Jie3; Lu, Hongli3; Wang, Peng3; Liu, Haining2; Li, Shiyou1,3 | |
刊名 | Journal of Power Sources |
2020-04-30 | |
卷号 | 456 |
关键词 | Additives Cathodes Electric discharges Electrolytes Ions Lithium-ion batteries Polymer blends Secondary emission Secondary ion mass spectrometry Electrode-electrolyte interfaces Electrolyte formulation Energy storage systems Functional additives High voltage cathode High-energy density batteries Interfacial architecture Time of flight secondary ion mass spectrometry |
ISSN号 | 03787753 |
DOI | 10.1016/j.jpowsour.2020.228006 |
英文摘要 | The development of high energy density and power density battery is of increasing importance for new generation energy storage system. However, interface instability between cathode and electrolyte remains a challenge for taking advantage of battery consistency. The use of commercial LiPF6-based electrolyte still has the limitations in optimizing interface stability to reduce material performance degradation. Here, self-developed synthetic lithium difluorobis (oxalato) phosphate (LiDFBOP) additive acts as "interface modifier" is adopted in the traditional electrolyte system. The resulting optimized electrolyte formulation exhibits improved electrochemical properties and self-discharge inhibition at high temperatures. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) and density functional theory (DFT) calculation is applied to detect the LiDFBOP effect mechanism and distribution of main components of the interface film. It can be demonstrated that the participation of LiDFBOP can lead to a change in the composition of the interface film, which increases the number of components that facilitate the transport of lithium ions. The analytical means for additive effect obtained from this work offer a new opportunity to make an in-depth analysis of film components between cathode and electrolyte. © 2020 Elsevier B.V. |
WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
语种 | 英语 |
出版者 | Elsevier B.V., Netherlands |
WOS记录号 | WOS:000523640600015 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115562] |
专题 | 石油化工学院 |
作者单位 | 1.Gansu Engineering Laboratory of Electrolyte Material for Lithium-ion Battery, Lanzhou; 730050, China; 2.CAS Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining; 810008, China 3.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; |
推荐引用方式 GB/T 7714 | Zhao, Dongni,Wang, Jie,Lu, Hongli,et al. Tailoring interfacial architecture of high-voltage cathode with lithium difluoro(bisoxalato) phosphate for high energy density battery[J]. Journal of Power Sources,2020,456. |
APA | Zhao, Dongni,Wang, Jie,Lu, Hongli,Wang, Peng,Liu, Haining,&Li, Shiyou.(2020).Tailoring interfacial architecture of high-voltage cathode with lithium difluoro(bisoxalato) phosphate for high energy density battery.Journal of Power Sources,456. |
MLA | Zhao, Dongni,et al."Tailoring interfacial architecture of high-voltage cathode with lithium difluoro(bisoxalato) phosphate for high energy density battery".Journal of Power Sources 456(2020). |
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